Improvement in devices for winding mainsprings of watches



M. D. KELLY.

I v 'Watchmakers TooL. I No. 106,372. Patented Aug 16, [1870.

N.FETERS, PMQTO-LITMQGRAPHER, WASHINGTON, D C.

' ii any suitable. length, and

blinded tates Letters Patent No. 106,37 2, dated August 16, 1870.

IMPROVEMENT IN DEVICES FOR WINDING- MAINSPRINGS OF WATCHES.

The Schedule referred to in these Letters Patent and making part of thesame- To all .whon't it may concern Be it known that I, lVIIGHAEL D.KELLY, of Cadiz, n the county of Trigg and State of Kentucky, havemvented a new and improved ll/Iainspring-NVinder;

and I do hereby declare that the following is a full,

'provided with gauging-springs to vary the depth of the recesses; alsowith pins for gauging the recesses to receivethe springs, and forcontrolling the relation of th.e,winder with the winding-shaft.

The said bars are also provided with an opening- .springandclosing-screw, all as hereinafter more fully described. a V

Figure l is a plan view of my improved winder;

Figure 2 is a sectional elevation of the same. Also aside elevation of awinding-shaft and plate to be used with it; and

Figure 3 is a transversesection of the same taken on the line at a; offig. 1.

Similai'letters of reference indicate corresponding p ts v v A and 13represent the said two bars, made of metal, jointedat Chy a rule or anyother suitable joint;

'"D is a closing-screw; and

E a spring for forcing them open. 1

' The free ends are made broad, and have semicircular recesses, F, inthe edges fronting'each other, which together inclose a space about thesize of, or littleless thznnthe barrels in which the springs are to beplaced.

Grepresents spring plates, attached to the bars at one side, andcarrying semicircular rings, H, which fit the recesses F, and move inand out of them sidewise.

The spring plates G are. provided with pins or.-

screws, 1, screwing into the plates A B, to prevent the sprihgs frombeing moved away too far, or to let the rings H be forced out of therecesses.

The bar B is made thinner opposite the recesses, so'as tohave ashoulder, K, leading fromth'e outside edge to the recess, tangential, ornearly so, to the wall of the recess. l r

L represents pins projecting from the bars near the recesses, which areto gauge the recess for the spring to the size of the barrel into whichthe spring is to be placed, by placing them inside of the barrel andunscrewing till t-heycome against the side wail'of the barrel.

These pins also control the relation'of the winding shaft with thebarrel, as will be hereinafter more fully described.

M represents recesses in the rings H, for the studs on the ends ofAmerican watch-springs, by which they are attached to the barrels, thesaid recesses being to make room for the projections to allow thesprings to coil snugly.

This improved tool is used in connection with a wiinling-shaft, N, and aface-plate, O, of the common sort, or any other, suitably arranged inthe followin way:

The uncoiled spring is placed on the plate around the projecting end Pof the shaft, which is provided with a small spur, end of the spring. j

The tool is then placed with the recessed face against the spring, andthe pins L arelengaged with holes in the plate, as shown as S, so as tohold the tool in the proper position in relation to the plate 0 andshaft N. i

The shaft is then turned by the crank, and the spring wound thereon anddrawn into the recess,-being guided thereto by the wall K;

As soon as the coil is completely drawn into the recess t-hej tool ispressed toward the'plate, so as to force the spring into' the recessenough for it to be confined therein by the walls thereof; but it willproject sufiiciently to'flbei transferred to the barrel by placing thelatter over, the springs, and then forcing it outof ,thetoo'l by thespring plate G, or by opening the bars A B, and letting the springexpand againstthe inner wall of the barrel. I

The end of the spring attached tothe shaft P, is detached from the spurthereon by turning the shaft backward, and allowing the-inner part toexpand suffliciently to'spring away from the stud.

"This improved tool is especially adapted for inserting springs intobarrels having the central studs U,

as the space at the center of the coil is free for the rcception'of thestud.

Having thus described my invention,

I claim as-new and desire to secure by Letters Patenti p 1. The windingand transferring-tool, composed of the bars A-B, jointed together asdescribed, provided with. the recesses 1 spring plates and rings H,guideshoulder K, pins L, and the screw D and spring E,

all substantially as specified.

2. The combination, with a winding-shaft N and plate 0, of theimprovedtoolherein described, sub.- stantially as specified. The abovespecification of -my invention signed by me this 7 th day of April,1870.

MICHAEL D. KELLY. Witnesses:

Geo. W. Mant s, L. S. Minion.

Q, that engages in the hole in the

